If you are trying to translate "Ne pense pas donc je suis" literally, it would mean:
"Do not think, therefore I am."
This is clearly a negation of Descartes' famous statement. It could be interpreted as:
* A sarcastic or ironic response: Someone saying it might be mocking the idea that thought is the basis of existence.
* A philosophical challenge: It could be used to suggest that there might be other ways of being, even without thought.
However, without more context, it's impossible to know the exact meaning intended.